Home / 1,087,508.88-1,500,564.39-628,455.21

Finding the Fourth Proportional to 1,087,508.88, 1,500,564.39 and 628,455.21

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Solution

The fourth proportional to 1,087,508.88, 1,500,564.39 and 628,455.21 is: 867,153.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,508.88 : 1,500,564.39 = 628,455.21 : x
  2. Step 2: Convert to fraction form
    1,087,508.88/1,500,564.39 = 628,455.21/x
  3. Step 3: Cross multiply
    1,087,508.88x = 1,500,564.39 × 628,455.21
  4. Step 4: Simplify right side
    1,087,508.88x = 943,037,508,835.97
  5. Step 5: Solve for x
    x = 943,037,508,835.97/1,087,508.88
  6. Step 6: Final answer
    x = 867,153.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.